Argos Locations Filter
Bearing between geographical locations
Internal function for package argosfilter
Internal function for package argosfilter
Great circle distance between geographical coordinates
Internal function for package argosfilter
Internal function for package argosfilter
Degrees to radians
Filter Argos locations
Filter locations for speed
Filters animal satellite tracking data obtained from the Argos system(<https://www.argos-system.org/>), following the algorithm described in Freitas et al (2008) <doi:10.1111/j.1748-7692.2007.00180.x>. It is especially indicated for telemetry studies of marine animals, where Argos locations are predominantly of low-quality.